AN INSTRUCTIONAL INSTRUMENT FOR LEARNING THE GEOMAGNETISM BASED ON AN EARTH MODEL

摘要

An earth magnetic field learning tool using a global model is provided to measure the magnetic dip and declination on a specific spot of the global model and to let experimenters know the earth magnetic field by forming an earth magnetic field similar to the real earth magnetic field on the global model. An earth magnetic field learning tool(10) includes: a global model(100) marked with latitude and longitude on the surface; a meridian bar(110) of which both ends are fixed to the north pole and the south pole of the global model, respectively, to turn about the global model; a measuring unit(120) connected to the meridian bar to move along the meridian bar and measure the magnetic dip and declination; and at least one magnet installed in the global model and arranged on the north magnetic pole and the south magnetic pole of the global model..